References

• Discovered: 200-plus Arctic lakes which bubble like jacuzzis from seeping methane gas http://siberiantimes.com/science/casestudy/features/discovered-200-plus-arctic-lakes-which-bubble-like-jacuzzis-from-seeping-methane-gas/
• Photos Reveal More Than 200 Bright Blue Arctic Lakes Have Started Bubbling With Methane Gas http://www.sciencealert.com/photos-reveal-more-than-200-bright-blue-arctic-lakes-have-started-bubbling-with-methane-gas
• New explanation for Siberia’s mystery craters http://earthsky.org/earth/new-explanation-for-siberias-mystery-craters
• The impact of the permafrost carbon feedback on global climate http://iopscience.iop.org/article/10.1088/1748-9326/9/8/085003/meta